On Dec 13, 8:38*am, "Lloyd E. Sponenburgh"
lloydspinsidemindspring.com wrote:

Lloyd, look carefully! There is a link at both ends of the machine.
One appears to be 90 degrees out of phase with the camera link. Just
like the old steam locomotives! Ingenious!

Ah... I see it now. *I wondered how the other link could clear the crank
arm, but I see that the handle turns the link, not the roller.

LLoyd

I can not see well enough to tell, but I think the handle turns the
roller.

Dan